Silver and Gold: an Account of the Mining and Metallurgical Industry of the United States: With Reference Chiefly to the Precious MetalsJ.B. Ford, 1873 - 566 من الصفحات |
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الصفحة 14
... yield of hydraulic ground , per cubic yard ; and a statement of the yield and expense of milling per cubic yard ( where stamps are used ) in cement and gravel claims . Superintendents and secretaries of mining companies , and ...
... yield of hydraulic ground , per cubic yard ; and a statement of the yield and expense of milling per cubic yard ( where stamps are used ) in cement and gravel claims . Superintendents and secretaries of mining companies , and ...
الصفحة 17
... yield of ore in mill , $ 18.60 . Wastage after complete washing , including concentrating - silver , $ 3.14 ; gold , $ 10.04 ; total , $ 13.18 . Test No. 2. Same mill - tailings 350 feet from mill : silver , $ 3.93 ; gold , $ 5.02 ...
... yield of ore in mill , $ 18.60 . Wastage after complete washing , including concentrating - silver , $ 3.14 ; gold , $ 10.04 ; total , $ 13.18 . Test No. 2. Same mill - tailings 350 feet from mill : silver , $ 3.93 ; gold , $ 5.02 ...
الصفحة 18
... yield of Quartz Mountain ran 9 per cent . silver . The ores of all the counties of California carry silver , and my experiments show they run from 3 to 50 per cent . of the yield . The closer the concentration from batteries , the ...
... yield of Quartz Mountain ran 9 per cent . silver . The ores of all the counties of California carry silver , and my experiments show they run from 3 to 50 per cent . of the yield . The closer the concentration from batteries , the ...
الصفحة 20
... yield of the precious metals for the entire coast has , of course , been greatly curtailed in con- sequence of the restricted amount of rain that has fallen for the past two years ; the effect of which has proved more disastrous to the ...
... yield of the precious metals for the entire coast has , of course , been greatly curtailed in con- sequence of the restricted amount of rain that has fallen for the past two years ; the effect of which has proved more disastrous to the ...
الصفحة 25
... yield large revenues and rank among the most de- sirable properties in the State . Encouraging developments , new ... yielding fair and often munificent returns . Among other properties that have long been slumbering , but are soon ...
... yield large revenues and rank among the most de- sirable properties in the State . Encouraging developments , new ... yielding fair and often munificent returns . Among other properties that have long been slumbering , but are soon ...
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